Improvement in balancing millstones



SENECA CULVER.

JJIHHHIHH illlilillll PATENT OFFIoE.

SENECA GULVER, OFSANDWIOH, ILLINOIS.

IMPROVEMENT IN BALANCING MILLSTONES.

Specification forming part of Letters Patent N 0. 122,367, dated J annary 2, 1872.

I, SENECA GULVER, of Sandwich, in the county of De Kalb and State of Illinois, have invented an Improved Millstone Balance, of

Referring to the accompanying drawing, A

represents the bed-frame supporting a pair of millstones. B designates the upper and rotary stone, and B the lower or bed-stone. 0 indicates the stone-shaft having a hub, D, and journaled to the frame A. Underneath the bed-stone B are arranged three annular plates marked, respectively, E F G. The first and last of these annular plates are secured, respectively, to the base of the bed-stone and to the timbers of the frame A, as shown. The plate F is located between the plates E and G. On the upper surface of the lower plate are two projections marked it h, on opposite sides or at a distance of half a circle from each other. These projections fit between the sides of channeled projections h formed on the un der side of the plate F, and thus allow the latter a rocking movement to 'two opposite sides. On the upper surface of the plate F are formed two projections, k 7L2, similar in form and relative arrangement to those marked h, but at a distance from the projections 1L equal to a quarter circle. The projections h h fit channeled projections h formed on the under surface of the plate E, and equivalent in form and relative arrangement to those marked h Instead of channeled projections h h mere recesses or notches formed in the plates E F will answer the desired purpose. The object of the plates E F G, constructed and arranged as described, is to allow the lower stone a double rocking motion or wabble corresponding to that of the upper stone. It will be observed that by the provisions for the wabble of the lower stone there is very little friction to overcome, and that but little expense of power is necessary to produce the desired motion. 1

The form of the annular plates E F G is somewhat crooked, as clearly shown in the drawing, and coincide with each other. The object is to bring the hearings on the same horizontal plane, so that the wabble will be equal on all sides; hence the plate F is raised on two opposite sides, and the plates E G made to coincide with its form.

What I claim as my invention, and desire to secure by Letters Patent, is-

The rockers E F G, provided'with the projections and bearings h h 111 11; and applied to the millstone B, as and for the purpose specified. In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

. SENECA CULVER.

Witnessesi WM. MARKS, Jr., JAr/ms H. SEDGWIOK. I (57) 

